LXR linux/drivers/gpu/drm/nouveau/nvkm/engine/sec2/base.c

   1/*
   2 * Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
   3 *
   4 * Permission is hereby granted, free of charge, to any person obtaining a
   5 * copy of this software and associated documentation files (the "Software"),
   6 * to deal in the Software without restriction, including without limitation
   7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8 * and/or sell copies of the Software, and to permit persons to whom the
   9 * Software is furnished to do so, subject to the following conditions:
  10 *
  11 * The above copyright notice and this permission notice shall be included in
  12 * all copies or substantial portions of the Software.
  13 *
  14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  19 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  20 * DEALINGS IN THE SOFTWARE.
  21 */
  22#include "priv.h"
  23
  24#include <core/firmware.h>
  25#include <subdev/top.h>
  26
  27static void
  28nvkm_sec2_recv(struct work_struct *work)
  29{
  30        struct nvkm_sec2 *sec2 = container_of(work, typeof(*sec2), work);
  31
  32        if (!sec2->initmsg_received) {
  33                int ret = sec2->func->initmsg(sec2);
  34                if (ret) {
  35                        nvkm_error(&sec2->engine.subdev,
  36                                   "error parsing init message: %d\n", ret);
  37                        return;
  38                }
  39
  40                sec2->initmsg_received = true;
  41        }
  42
  43        nvkm_falcon_msgq_recv(sec2->msgq);
  44}
  45
  46static void
  47nvkm_sec2_intr(struct nvkm_engine *engine)
  48{
  49        struct nvkm_sec2 *sec2 = nvkm_sec2(engine);
  50        sec2->func->intr(sec2);
  51}
  52
  53static int
  54nvkm_sec2_fini(struct nvkm_engine *engine, bool suspend)
  55{
  56        struct nvkm_sec2 *sec2 = nvkm_sec2(engine);
  57
  58        flush_work(&sec2->work);
  59
  60        if (suspend) {
  61                nvkm_falcon_cmdq_fini(sec2->cmdq);
  62                sec2->initmsg_received = false;
  63        }
  64
  65        return 0;
  66}
  67
  68static void *
  69nvkm_sec2_dtor(struct nvkm_engine *engine)
  70{
  71        struct nvkm_sec2 *sec2 = nvkm_sec2(engine);
  72        nvkm_falcon_msgq_del(&sec2->msgq);
  73        nvkm_falcon_cmdq_del(&sec2->cmdq);
  74        nvkm_falcon_qmgr_del(&sec2->qmgr);
  75        nvkm_falcon_dtor(&sec2->falcon);
  76        return sec2;
  77}
  78
  79static const struct nvkm_engine_func
  80nvkm_sec2 = {
  81        .dtor = nvkm_sec2_dtor,
  82        .fini = nvkm_sec2_fini,
  83        .intr = nvkm_sec2_intr,
  84};
  85
  86int
  87nvkm_sec2_new_(const struct nvkm_sec2_fwif *fwif, struct nvkm_device *device,
  88               enum nvkm_subdev_type type, int inst, u32 addr, struct nvkm_sec2 **psec2)
  89{
  90        struct nvkm_sec2 *sec2;
  91        int ret;
  92
  93        if (!(sec2 = *psec2 = kzalloc(sizeof(*sec2), GFP_KERNEL)))
  94                return -ENOMEM;
  95
  96        ret = nvkm_engine_ctor(&nvkm_sec2, device, type, inst, true, &sec2->engine);
  97        if (ret)
  98                return ret;
  99
 100        fwif = nvkm_firmware_load(&sec2->engine.subdev, fwif, "Sec2", sec2);
 101        if (IS_ERR(fwif))
 102                return PTR_ERR(fwif);
 103
 104        sec2->func = fwif->func;
 105
 106        ret = nvkm_falcon_ctor(sec2->func->flcn, &sec2->engine.subdev,
 107                               sec2->engine.subdev.name, addr, &sec2->falcon);
 108        if (ret)
 109                return ret;
 110
 111        if ((ret = nvkm_falcon_qmgr_new(&sec2->falcon, &sec2->qmgr)) ||
 112            (ret = nvkm_falcon_cmdq_new(sec2->qmgr, "cmdq", &sec2->cmdq)) ||
 113            (ret = nvkm_falcon_msgq_new(sec2->qmgr, "msgq", &sec2->msgq)))
 114                return ret;
 115
 116        INIT_WORK(&sec2->work, nvkm_sec2_recv);
 117        return 0;
 118};
 119